I also saw this problem several times in the testing releases. However, things got a lot better since the imrpvoements to modem-manager.
Can you please try to reproduce this in karmic stable and report back whether it is still present? ** Changed in: network-manager-applet (Ubuntu) Status: New => Incomplete -- When using USB mobile broadband, connection immediately disconnects https://bugs.launchpad.net/bugs/490206 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs